データシートサーチシステム |
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MPXV5010GC7U データシート(PDF) 76 Page - Motorola, Inc |
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MPXV5010GC7U データシート(HTML) 76 Page - Motorola, Inc |
76 / 670 page MMA1270D 2–40 Motorola Sensor Device Data www.motorola.com/semiconductors BASIC CONNECTIONS 10 11 12 13 14 15 16 8 7 6 5 4 3 2 1 9 VSS VSS VSS VOUT STATUS VDD VSS ST N/C N/C N/C N/C N/C N/C N/C N/C Figure 4. Pinout Description Pin No. Pin Name Description 1 thru 3 VSS Redundant connections to the internal VSS and may be left unconnected. 4 VOUT Output voltage of the accelerometer. 5 STATUS Logic output pin used to indicate fault. 6 VDD The power supply input. 7 VSS The power supply ground. 8 ST Logic input pin used to initiate self– test. 9 thru 13 Trim pins Used for factory trim. Leave unconnected. 14 thru 16 — No internal connection. Leave unconnected. Figure 5. SOIC Accelerometer with Recommended Connection Diagram MMA1270D ST VDD VSS VOUT OUTPUT SIGNAL R1 1 k Ω 4 C2 0.1 µF 8 6 7 LOGIC INPUT VDD C1 0.1 µF STATUS 5 3 2 1 VSS VSS VSS PCB Layout P0 A/D IN VRH VSS VDD ST VOUT VSS VDD 0.1 µF C 1 k Ω 0.1 µF C 0.1 µF POWER SUPPLY C R C 0.1 µF Figure 6. Recommended PCB Layout for Interfacing Accelerometer to Microcontroller P1 STATUS NOTES: • Use a 0.1 µF capacitor on VDD to decouple the power source. • Physical coupling distance of the accelerometer to the mi- crocontroller should be minimal. • Place a ground plane beneath the accelerometer to reduce noise, the ground plane should be attached to all internal VSS terminals shown in Figure 4. • Use an RC filter of 1 kΩ and 0.1 µF on the output of the ac- celerometer to minimize clock noise (from the switched capacitor filter circuit). • PCB layout of power and ground should not couple power supply noise. • Accelerometer and microcontroller should not be a high current path. • A/D sampling rate and any external power supply switching frequency should be selected such that they do not inter- fere with the internal accelerometer sampling frequency. This will prevent aliasing errors. Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
同様の部品番号 - MPXV5010GC7U |
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同様の説明 - MPXV5010GC7U |
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